That`s quite a pack. Personally, I carry a 65L pack when hiking that`s about 12-15kg depending on the amount of food I bring. There`s a lot of stuff in it, for any situation that might arise. I don`t have a car, but when I get one, I`ll probably just leave my backpack in there all the time and that will be most of my survival kit, except the typical car- and extra-for other-passengers-stuff.

12 kg is what we did the 3 mile(european) run with in the army. If the back pack is comfortable, you can run with that for hours.

So much of what people buy for emergencies is soeasily improvised in field wih a little knowledge anyway. I`m sure the most important thing in such a scenario would be to get away in a hurry, so I`d pack accordingly.

In this way, I`m also very familiar with my kit, since it`s my spare time, heavily used, recreation pack. A lot of stuff I used to think I needed has been removed. But well, I`m not a fan of owning a lot of stuff anyway.